21.8.7.60 mysql_select_db()

int mysql_select_db(MYSQL *mysql, const char
*db)

Description

Causes the database specified by db to become
the default (current) database on the connection specified by
mysql. In subsequent queries, this database
is the default for table references that include no explicit
database specifier.

mysql_select_db() fails unless
the connected user can be authenticated as having permission to
use the database.